#include<iostream>
using std::cout;
using std::endl;

int main()
{
	int arr[3][4]
	{
		{0,1,2,3},
		{4,5,6,7},
		{8,9,10,11}
	};
	
	//range for 
	for(const int(&row)[4] : arr)
		for(int col : row)	cout << col << " ";
	cout << endl;
	
	//for loop
	for(size_t i = 0; i != 3; ++i)
		for(size_t j = 0; j != 4; ++j)	cout << arr[i][j] << " ";
	cout << endl;
	
	//using pointers
	for(int(*row)[4] = arr; row != arr + 3; ++row)
		for(int *col = *row; col != *row + 4; ++col)  cout << *col << " ";
	cout << endl;
	
	return 0;
}
